If it's a 77, it's a PZJ77 (JDM, 1PZ engine [5 cyl, I think]). It was superceeded by the 1HZ, and sold as a 4-door hardtop (HZJ76) or 2-door FRP top (HZJ74). They came in two models, a LX (rear drums) and ZX (rear discs, nicer interior). Tranny was a 5spd H-series w/ 4.8 first gear, or 4-spd auto. Suspension was a live front axle on coils, rear leaf springs, part-time 4wd w/ manual hubs available (auto were std), optional F/R diff locks for $1500 more.
The PZJ77 was similar to the 1st gen Prado's...front leaf springs (prado had a turbo diesel). The HZJ76/74 were discontinued at the end of last year. Too bad, as a new one w/ 5spd manual and diff locks was under $28K USD. You can add a Toyota turbine and aftermarket intercooler (pretty standard for 1HZ mods) for more power.
In the Jan 04 issue of Landcruiser magazine, there was a guy selling a PZJ77 w/ lift, warn winch, safari snorkel, 100K mi, for $3500...cheap for reliable transportation. There was also a "UZJ44"...yes, an '82 BJ44 w/ 1UZ V8 swapped in, but for $20K. Also, there was a used (like 2 yr old) HZJ76 w/ 5spd manual and all the goodies (lift, winch, diff locks, turbo, etc.) for $28K.